计算题：给水调节阀承压截面积为2×10-4米2，承受4千牛的力，求给水压力。

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小题1:If you want to have a piano lesson, you may       .

A. call Susan at 7328059   

B. surf the website: www.music.com.au      

C. telephone Mr. White at 5132683

小题2: Who is the owner of the lost cat?

A. Mr. White.   B. David.   C. Susan.

小题3:If you want the job as a guide, you should       .

A. know the city very well  B. be an experienced driver C. be a beautiful girl

小题4:Which information about the apartment is not mentioned in the table?

A. It has a beautiful view.

B. It has three floors.   

C. It has three bedrooms.

小题5: How can you get in touch with the owner of the apartment for more information?

A. By sending an e-mail.   

B. By going to visit it.   

C. By making a phone call.

（）障碍是学习障碍的主要类型。

2岁男孩，持续高热伴咳嗽6天，加重1天，烦躁、气促，青霉素治疗无效。体检：体温39.5℃，口唇青紫，三凹征明显，呼吸65次／分，心率160次／分，气管略右移，左下肺呼吸音低，叩诊呈浊音，肝肋下2cm，X线胸片示：两肺散在斑片状阴影，左下肺致密阴影，可见自外上向内下的反抛物线状边缘。

抗生素选择最适宜的是（）

A.青霉素

B.红霉素

C.罗红霉素

D.氨苄西林

E.氧氟沙星

下述"转移性骨肿瘤"的描述错误的是（）

A.骨髓转移以红骨髓居多

B.常为多发转移

C.偶可呈弥漫性骨硬化改变

D.无骨膜反应和软组织肿块

E.髂骨转移多见